[vm] Disable thread leak detection in TSAN build.
[vm] Disable thread leak detection in TSAN build.

Bug: https://github.com/dart-lang/sdk/issues/41811
Change-Id: I576985c45969bbd379f3f55ab41aa79a8ce77b6b
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/147328
Reviewed-by: Alexander Aprelev <dfb74c35a357c2059971a4bf7fe26b6a7c18085d@google.com>
Reviewed-by: Martin Kustermann <a35dd5b79fac84b2bb3b026a16b8becc55af5961@google.com>
Reviewed-by: Siva Annamalai <2e618a8cbd7bb6b3d4409061ae407d692a098546@google.com>

dart-lang/sdk,dart-lang/sdk,dart-lang/sdk,dart-lang/sdk,dart-lang/sdk,dart-lang/sdk,dart-lang/sdk,dart-lang/sdk